DOI: 10.3390/rs12040715
论文题名: Joint inversion of GPS, leveling, and InSAR data for the 2013 Lushan (China) earthquake and its seismic hazard implications
作者: Li Z. ; Wen Y. ; Zhang P. ; Liu Y. ; Zhang Y.
刊名: Remote Sensing
ISSN: 20724292
出版年: 2020
卷: 12, 期: 4 语种: 英语
英文关键词: Coseismic deformation
; Joint inversion
; Lushan earthquake
; Seismic hazard
; Space geodesy
Scopus关键词: Deformation
; Earthquake effects
; Geodesy
; Geodetic satellites
; Global positioning system
; Hazards
; Radar stations
; Seismic response
; Strike-slip faults
; Coseismic deformation
; Helmert variance component estimations
; Interferometric synthetic aperture radars
; Joint inversion
; Seismic hazards
; Space geodesy
; Static Coulomb stress changes
; Strike-slip component
; Synthetic aperture radar
英文摘要: On 20 April 2013, a moment magnitude (Mw) 6.6 earthquake occurred in the Lushan region of southwestern China and caused more than 190 fatalities. In this study, we use geodetic data from nearly 30 continuously operating global positioning system (GPS) stations, two periods of leveling data, and interferometric synthetic aperture radar (InSAR) observations to image the coseismic deformation of the Lushan earthquake. By using the Helmert variance component estimation method, a joint inversion is performed to estimate source parameters by using these GPS, leveling, and InSAR data sets. The results indicate that the 2013 Lushan earthquake occurred on a blind thrust fault. The event was dominated by thrust faulting with a minor left-lateral strike-slip component. The dip angle of the seismogenic fault was approximately 45.0°, and the fault strike was 208°, which is similar to the strike of the southern Longmenshan fault. Our finite fault model reveals that the peak slip of 0.71 m occurred at a depth of ~12 km, with substantial slip at depths of 6-20 km. The estimated magnitude was approximately Mw 6.6, consistent with seismological results. Furthermore, the calculated static Coulomb stress changes indicate that the 2013 Lushan earthquake may have been statically triggered by the 2008Wenchuan earthquake. © 2020 by the author. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159627
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Geodesy, National Geomatics Center of China, Beijing, 100830, China; School of Geodesy and Geomatics, Wuhan University, Wuhan, 430079, China; Department of Earthquake Monitoring and Predication, China Earthquake Administration, Beijing, 100036, China
Recommended Citation:
Li Z.,Wen Y.,Zhang P.,et al. Joint inversion of GPS, leveling, and InSAR data for the 2013 Lushan (China) earthquake and its seismic hazard implications[J]. Remote Sensing,2020-01-01,12(4)